Patent GB-409266-A (GB)
Title: Improvements in method of manufacturing boots and shoes
IPC: A43D111/00
Filed: 1932-07-19
Abstract: 409,266. Shoe manufacture. BRADSPEED CORPORATION, 4242, Laclede Avenue, St. Louis, Missouri, U.S.A. July 19, 1932, No. 20441. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 25, 1932]. [Class 17 (i).] In the manufacture of shoes &c. where parts are assembled and operated upon at successive stations at which successsive operations are performed, the stations are arranged in a series-shunt relation in accordance with the relative average working capacities of the operators or the machines so that work is distributed substantially equally between the machines or operators which work continuously, and the shoes are moved continuously from station to station. Thus, an operator or a machine having a high output capacity may be followed by several machines having low output capacities, the output of the former being distributed amongst the latter by suitable conveyer arrangements. In consequence, there is no tendency for work to accumulate and stand idle at the low capacity stations. Figs. 1 and 2 show a lay-out suitable for the manufacture of shoes in which the uppers are pulled over and cemented to the insole, the lasting tacks being removed after the cement has set, and the shoes then being bottomed. Shoes are supplied by a rack 1, Fig. 1, to three assemblers 2, from which the shoes are passed by chutes 3 to three pulling-over stations 4, which are followed by two cementing stations 5 and three side lasters 8. The output from the latter is suitably distributed, by conveyers 11, 14, between six bed lasters 9, 10, 15, 16, whence the shoes pass to an inspection station 12 and a collecting rack 13. The rack is passed through a drier 17 and the shoes are distributed between five tack-pullers 19 where the lasting tacks are removed. Chutes 21 then pass them to the trimmers 22 which, in turn, pass them to four pounders 24, from which they are collected by chutes 25 and passed to two driers 26 in which the shoes are tempered. Each drier supplies an ironer 27 followed by a shankapplying station 29, the latter collecting their output on a rack 30. The rack 30 is moved to a bottoming department, Fig. 2, where the shoes may be distributed between eight stations 31, 35 at which the upper is further wiped over the last, an outsole is temporarily attached, and the last is removed. Chutes 32 then pass the lasts to bins 34, and the shoes to outside stitchers 33, which feed a single station 37 at which the temporary sole-securing tacks are removed. The shoes then pass to a relasting station 40, next to a station 43 at which the channel flap is cemented, through a cement drier 44, on to a preliminary channel flap closing station 45, and then to a flap closing station 48. The shoes pass finally, by chutes 49, 53, to a series of sole levellers 54. The units 33, &c., may be duplicated as shown at 50 .. 52. A somewhat modified lasting and bottoming plant is described with reference to Figs. 3 and 4 (not shown). U.S.A. Patents 1,749,926, 1,839,445, and 1,839,446, and U.S.A. Applications 349,104 filed March 22nd, 1929, and 530,266 filed April 15th, 1931, are referred to.